I'm using driver version 5.08.7, Windows XP and 2000, Access XP with VBA.
PicoScope is working fine on both systems with USB-PP1 port. But the USB adapter is not found when I try to run my database with the following code:

Try using the example C application, it is designed to get you started with these sort of applications. You could also try downloading the latest software to ensure that you have USB support installed.